Originally Posted by Zaleukos
I would like to see more NPCs in certain battles (Ulfric attacking Solitude at the head of less than ten men, and giving a speech to five or so is a joke), and also more wildlife in the wilderness (that is very empty between locations).

I believe that the Civil War Overhaul mod already increase existing battle size (along with adding a bunch of fights a little everywhere, do not install with a lowbie character).

There is also a bunch of wildlife overhaul mods for Skyrim that change spawn points (and behaviors).